添加NaCl对无溶剂合成ZSM-5分子筛结构及催化性能影响  

Eff ect of NaCl on the Structure and Catalytic Performance of ZSM-5 Zeolite Synthesized by Solvent-free Method

作　　者：王逸 孙兵 潘昱彤 王鹏[2] 肖霞 赵震 Wang Yi;Sun Bing;Pan Yutong;Wang Peng;Xiao Xia;Zhao Zhen(Institute of Catalysis for Energy and Environment,College of Chemistry and Chemical Engineering,Shenyang Normal University,Liaoning,110034;State Key Laboratory of Heavy Oil Processing,China University of Petroleum(Beijing),Beijing,102249)

机构地区：[1]沈阳师范大学化学化工学院能源与环境催化研究所,辽宁110034 [2]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《当代化工研究》2023年第24期1-4,共4页Modern Chemical Research

基　　金：辽宁省教育厅基本科研项目“原油催化裂解制低碳烯烃和芳烃高效催化材料的研发”(项目编号:LJKMZ20221476);沈阳市中青年科技创新人才支持计划项目“原油催化裂解多产烯烃和芳烃催化新材料的研发”(项目编号:RC220357);辽宁省研究生教育教学改革研究项目“‘六维共建,协同育人’创新型研究生人才培养体系的探索与实践”(项目编号:LNYJG2022400)。

摘　　要：本文采用绿色环保的无溶剂法合成ZSM-5分子筛,并利用X射线衍射(XRD)、扫描电镜(SEM)、N2吸-脱附和氨气程序升温脱附(NH_(3)-TPD)等手段,考察NaCl的用量对ZSM-5分子筛形貌、孔结构及比表面积和酸性质的影响。结果表明,随NaCl用量的增加,ZSM-5分子筛晶粒尺寸有所减小,但外比表面积和介孔孔容却呈现逐渐增大的趋势。在正辛烷催化裂解反应中,添加0.05g NaCl合成ZSM-5分子筛上乙烯和丙烯总选择性为57.4%。In this work,ZSM-5 zeolite was synthesized by solven-free method,and the effects of NaCl dosage on the morphology,pore structure,specific surface area and acidity of ZSM-5 zeolite were investigated by means of X-ray diffraction(XRD),scanning electron microscopy(SEM),N2 adsorption and desorption and ammonia temperature programmed desorption(NH_(3)-TPD).The results showed that the grain size of ZSM-5 zeolite decreased with the increase of NaCl addition,but the external specific surface area and mesoporous pore volume increased gradually.The total selectivity of ethylene and propylene was 57.4%on ZSM-5 zeolite synthesized by adding 0.05 g NaCl in the catalytic cracking reaction of n-octane.

关 键 词：无溶剂合成 ZSM-5分子筛 NACL 催化裂解 

分 类 号：TQ221.2[化学工程—有机化工]